From Bits to Air: Real-Time ASK/PSK with PlutoSDR (TX) & RTL-SDR (RX) | Live Demo

Описание: #SDR #PlutoSDR #RTLSdr #GnuRadio #DigitalModulation #ASK #PSK #BPSK #Wireless #dsp

Want to see your bits go on the air? In this hands-on tutorial I build a simple digital transmitter & receiver using PlutoSDR (TX) and RTL-SDR (RX). We’ll start with the theory behind ASK (Amplitude Shift Keying) and PSK (Phase Shift Keying), then jump into GNU Radio to modulate, transmit, receive, and visualize real packets in real time. You’ll learn symbol mapping, filters, timing recovery, and BER checks — plus practical RF tips like gain, sample rates, and how to stay legal in ISM bands or on a dummy load.

What you’ll learn
-- How ASK and BPSK map bits to amplitude/phase
-- Building a PlutoSDR transmitter flowgraph (bit source → framing → mod → RRC → Pluto TX)
-- Building an RTL-SDR receiver flowgraph (RTL source → filter → clock recovery → demod → BER)
-- How to choose sample rates, RF bandwidth, carrier frequency, and gains
-- Debugging with spectrum/waterfall, eye diagrams, and constellation plots

Hardware:
-- Analog Devices PlutoSDR (Tx/Rx) — used here as TX
-- RTL-SDR v3 (or similar) — used here as RX
-- 50 Ω SMA attenuators (-20 to -40 dB), coax jumpers, optional 50 Ω dummy load
-- Antennas for 433 MHz / 915 MHz / 2.4 GHz (pick legal band in your country)

Legal note: Transmit only where you’re licensed, or use a shielded setup/dummy load with heavy attenuation.

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